Determining optimal well spacing/stacking configurations in multi-bench unconventional reservoirs requires a robust understanding of the drained rock volume (DRV) and resulting interference between multi-well development. Many studies focus on singular workflows or data acquisition; however, we have developed a cost effective, fit-for-purpose toolkit that involves multi-disciplinary analysis of downhole bottom hole pressure (BHP), pressure monitoring using existing vertical wells, interference testing, and time-lapse geochemistry (TLG) to elucidate DRV architectures in ConocoPhillips’ Midland Basin acreage. This paper focuses on ascertaining initial fracture geometry, sustained conductive producing area, and volumetric depletion profiles. These parameters are integrated to provide quantitative insights regarding inter-well communication and well performance with the goal of optimizing future development. The Midland Basin team was able to leverage extensive learnings from past pilots and substantial expertise from across the unconventional portfolio in establishing a timely and capital efficient data acquisition workflow to deliver differential insights for development optimization. The integrated approach began with evaluating production performance results and integration with a local 3D geo-model to assess recoverable resources. BHP data was then utilized to determine quantitative pressure interference via calculated Chow Pressure Group (CPG) values. Pressure monitoring using gauges in vertical wells were utilized to understand reservoir depletion in different formations and distances (far field) from horizontal producers. Lastly, TLG and core-calibrated production allocation were used to independently verify vertical drainage. Key findings include: 1) determination of hydraulically stimulated horizontal well DRVs dimensions and behavior was accelerated by the combined use of interference analysis, TLG and performance data, 2) pressure and fluid interference between different benches varied with differences in geology and must be considered when optimizing stacking/spacing, and 3) integration of well performance and geologic interpretations led to a more comprehensive understanding of drainage. This paper describes the collection and implementation of a novel fit-for-purpose, multi-disciplinary toolkit to be integrated in field development optimization efforts. The project is multi-disciplinary and involved collaboration between reservoir engineers and geoscientists from the asset and global technical functions group during the collection, analysis, and integration phases.
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SPE/AAPG/SEG Unconventional Resources Technology Conference
June 13–15, 2023
Denver, Colorado, USA
Field Development Optimization in Midland Basin: An Integrated Multi-Disciplinary Approach
Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, Denver, Colorado, USA, June 2023.
Paper Number:
URTEC-3856029-MS
Published:
June 13 2023
Citation
Wilkinson, Antonio, Jweda, Jason, Kolb, Brady, Rincones, M. D., Snidow, Kelli, and Carl Warren. "Field Development Optimization in Midland Basin: An Integrated Multi-Disciplinary Approach." Paper presented at the SPE/AAPG/SEG Unconventional Resources Technology Conference, Denver, Colorado, USA, June 2023. doi: https://doi.org/10.15530/urtec-2023-3856029
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